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Class Information
Number: 166/242.1
Name: Wells > Conduit wall or specific conduit end structure
Description: Apparatus comprising (a) a particular modification to a pipe through the thickness or (b) means at the end of a conduit for facilitating entry of the conduit into the well (e.g., casing shoes).


Sub-classes under this class:

Class Number Class Name Patents
166/242.9 Brick or cement casing liner 4
166/242.4 Corrosion prevention or deterring 18
166/242.6 Downhole coupling or connector 203
166/242.2 Flexible tube or cable 88
166/242.3 Plural, parallel, nonconcentric conduits 71
166/242.8 Shoe detail 50
166/242.5 Side entry 42


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
7431082 Retaining lines in bypass groove on downhole equipment Oct. 7, 2008
7431348 Subsurface drill string Oct. 7, 2008
7409998 Critical velocity reduction in a gas well Aug. 12, 2008
7404440 Methods of using casing strings in subterranean cementing operations Jul. 29, 2008
7404438 Solid expandable tubular members formed from very low carbon steel and method Jul. 29, 2008
7387167 Insulating device and assembly Jun. 17, 2008
7377315 Complaint covering of a downhole component May. 27, 2008
7373974 Downhole release tool and method May. 20, 2008
7370700 Multiple entrance shunt May. 13, 2008
7357180 Inhibiting effects of sloughing in wellbores Apr. 15, 2008
7350565 Self-expandable cylinder in a downhole tool Apr. 1, 2008
7347258 Coated tools for use in oil well pipes Mar. 25, 2008
7337841 Casing comprising stress-absorbing materials and associated methods of use Mar. 4, 2008
RE40067 Downhole equipment tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes Feb. 19, 2008
7303016 Casing with isolated annular space Dec. 4, 2007
7303022 Wired casing Dec. 4, 2007
7299867 Hanger mounted in the bore of a tubular component Nov. 27, 2007
7291303 Method for bonding a transmission line to a downhole tool Nov. 6, 2007
7290607 Device for the separation of the gas phase from a mixture of fluid/gas for use in hydrocarbons producing and injection wells Nov. 6, 2007
7284608 Casing strings and methods of using such strings in subterranean cementing operations Oct. 23, 2007
7275594 Stab guide Oct. 2, 2007
7243714 Well provided with flexible production tubing Jul. 17, 2007
7226243 Load-bearing, lightweight, and compact super-insulation system Jun. 5, 2007
7225875 Multi-layered wellbore junction Jun. 5, 2007
7219746 Apparatus and method for installing a branch junction from a main well May. 22, 2007
7219729 Permanent downhole deployment of optical sensors May. 22, 2007
7207383 Multiple entrance shunt Apr. 24, 2007
7195064 Mono-diameter wellbore casing Mar. 27, 2007
7191830 Annular pressure relief collar Mar. 20, 2007
7174958 Drill string member Feb. 13, 2007
7159653 Spacer sub Jan. 9, 2007
7125053 Pre-expanded connector for expandable downhole tubulars Oct. 24, 2006
7111680 Bore-lining tubing and method of use Sep. 26, 2006
7090010 Gauge carrier sub apparatus Aug. 15, 2006
7077197 Expandable tubular connection Jul. 18, 2006
7077210 Expansion method Jul. 18, 2006
7073594 Wireless downhole well interval inflow and injection control Jul. 11, 2006
7075454 Power generation using batteries with reconfigurable discharge Jul. 11, 2006
7073601 Profiled encapsulation for use with instrumented expandable tubular completions Jul. 11, 2006
RE39141 Downhole equipment, tools and assembly procedures for the drilling, tie-in and completion of vertical cased oil wells connected to liner-equipped multiple drainholes Jun. 27, 2006
7044219 Shock absorber May. 16, 2006
7040422 Drill string member May. 9, 2006
7017670 Apparatus and method for expanding and fixing a tubular member within another tubular member, a liner or a borehole Mar. 28, 2006
7013972 In situ thermal processing of an oil shale formation using a natural distributed combustor Mar. 21, 2006
7000695 Expanding wellbore junction Feb. 21, 2006
6997253 Anti-rotation method and apparatus for limiting rotation of cementing plugs Feb. 14, 2006
6994170 Expandable sand control screen assembly having fluid flow control capabilities and method for use of same Feb. 7, 2006
6991037 Multiple azimuth control of vertical hydraulic fractures in unconsolidated and weakly cemented sediments Jan. 31, 2006
6978843 Well configuration and method of increasing production from a hydrocarbon well Dec. 27, 2005
6973969 Apparatus and methods for preventing or limiting rotation of cementing plugs Dec. 13, 2005

1 2 3 4 5


 
 
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